Function esp_idf_sys::bootloader_common_get_sha256_of_partition

pub unsafe extern "C" fn bootloader_common_get_sha256_of_partition(
    address: u32,
    size: u32,
    type_: c_int,
    out_sha_256: *mut u8,
) -> esp_err_t

@brief Calculates a sha-256 for a given partition or returns a appended digest.

This function can be used to return the SHA-256 digest of application, bootloader and data partitions. For apps with SHA-256 appended to the app image, the result is the appended SHA-256 value for the app image content. The hash is verified before returning, if app content is invalid then the function returns ESP_ERR_IMAGE_INVALID. For apps without SHA-256 appended to the image, the result is the SHA-256 of all bytes in the app image. For other partition types, the result is the SHA-256 of the entire partition.

@param[in] address Address of partition. @param[in] size Size of partition. @param[in] type Type of partition. For applications the type is 0, otherwise type is data. @param[out] out_sha_256 Returned SHA-256 digest for a given partition.

@return - ESP_OK: In case of successful operation. - ESP_ERR_INVALID_ARG: The size was 0 or the sha_256 was NULL. - ESP_ERR_NO_MEM: Cannot allocate memory for sha256 operation. - ESP_ERR_IMAGE_INVALID: App partition doesn’t contain a valid app image. - ESP_FAIL: An allocation error occurred.